JPS6141181B2 - - Google Patents

Info

Publication number
JPS6141181B2
JPS6141181B2 JP56034081A JP3408181A JPS6141181B2 JP S6141181 B2 JPS6141181 B2 JP S6141181B2 JP 56034081 A JP56034081 A JP 56034081A JP 3408181 A JP3408181 A JP 3408181A JP S6141181 B2 JPS6141181 B2 JP S6141181B2
Authority
JP
Japan
Prior art keywords
optical
injection
frequency
amplifier
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP56034081A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57148436A (en
Inventor
Soichi Kobayashi
Yoshihisa Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56034081A priority Critical patent/JPS57148436A/ja
Publication of JPS57148436A publication Critical patent/JPS57148436A/ja
Publication of JPS6141181B2 publication Critical patent/JPS6141181B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
JP56034081A 1981-03-09 1981-03-09 Optical relay transmission system Granted JPS57148436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56034081A JPS57148436A (en) 1981-03-09 1981-03-09 Optical relay transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56034081A JPS57148436A (en) 1981-03-09 1981-03-09 Optical relay transmission system

Publications (2)

Publication Number Publication Date
JPS57148436A JPS57148436A (en) 1982-09-13
JPS6141181B2 true JPS6141181B2 (de) 1986-09-12

Family

ID=12404305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56034081A Granted JPS57148436A (en) 1981-03-09 1981-03-09 Optical relay transmission system

Country Status (1)

Country Link
JP (1) JPS57148436A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07112182B2 (ja) * 1987-07-23 1995-11-29 国際電信電話株式会社 双方向光伝送系における秘話光通信方式
US4947134A (en) * 1987-10-30 1990-08-07 American Telephone And Telegraph Company Lightwave systems using optical amplifiers
JP4575703B2 (ja) * 2004-04-21 2010-11-04 日本電信電話株式会社 光伝送システム及びその送信機

Also Published As

Publication number Publication date
JPS57148436A (en) 1982-09-13

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